The game is live, and the umps have a job to do. They call it like they see it as it happens. It's sort of like performing without a net. I don't see the need to stop the game to determine if an umpire's call was accurate. The human element, as it's offered to, includes the umpires as much as it includes the players. I know I'm in a minority, perhaps of just one, but I just don't see the need for that much scrutiny for an entertainment event.